If your car has been in for service and a service technician has replaced the wiper arm for the rear wiper blade, the procedure for replacing the wiper is different.
Replacing the rear wiper blade
If the wiper arm has been replaced by a service technician in connection with service, follow the steps below to replace the wiper blade on the rear window1.
Fold the wiper arm outwards.
Angle the wiper blade slightly out from the wiper arm.
Grip around the wiper arm and using a thumb, press the blade forward (at the arrow) to loosen and remove the blade.
Press the new wiper blade into place. Check that it is firmly attached.
Fold the wiper arm back down.